In this latest movement in the symphony of her life, Isabel is faced with novel challenges, each of which tests her resolution to do the right thing. Dawn, a nurse in an infectious diseases ward, is let down by her lover and needs a place to live. And then there is the pompous and slippery Professor Robert Lettuce. He is planning a prestigious conference, but look at the budget: why is there such a large payment for Lettuce himself and for a young female assistant?